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root |
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package DBM_Filter::encode ; |
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use strict; |
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use warnings; |
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use Carp; |
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our $VERSION = '0.01'; |
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BEGIN |
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{ |
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eval { require Encode; }; |
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croak "Encode module not found.\n" |
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if $@; |
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} |
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sub Filter |
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{ |
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my $encoding_name = shift || "utf8"; |
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my $encoding = Encode::find_encoding($encoding_name) ; |
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croak "Encoding '$encoding_name' is not available" |
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unless $encoding; |
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return { |
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Store => sub { |
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$_ = $encoding->encode($_) |
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if defined $_ ; |
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}, |
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Fetch => sub { |
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$_ = $encoding->decode($_) |
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if defined $_ ; |
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} |
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} ; |
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} |
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1; |
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__END__ |
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=head1 DBM_Filter::encode |
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=head1 SYNOPSIS |
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use SDBM_File; # or DB_File, or GDBM_File, or NDBM_File, or ODBM_File |
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use DBM_Filter ; |
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$db = tie %hash, ... |
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$db->Filter_Push('encode' => 'iso-8859-16'); |
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=head1 DESCRIPTION |
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This DBM filter allows you to choose the character encoding will be |
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store in the DBM file. The usage is |
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$db->Filter_Push('encode' => ENCODING); |
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where "ENCODING" must be a valid encoding name that the Encode module |
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recognises. |
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A fatal error will be thrown if: |
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=over 5 |
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=item 1 |
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The Encode module is not available. |
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=item 2 |
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The encoding requested is not supported by the Encode module. |
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=back |
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=head1 SEE ALSO |
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L<DBM_Filter>, L<perldbmfilter>, L<Encode> |
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=head1 AUTHOR |
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Paul Marquess pmqs@cpan.org |
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